Toggle actuated slidable jaw wrench



A. A. KOSKIN EN TOGGLE ACTUATED, SLIDABLE JAW WRENCH Dec. 12, 1950` Filed March 24. 1947 2 Sheets-Sheet l Dec. l2, 1950 A. A. KOSKINEN 2,533,817

TOGGLE ACTUATED, SLIDABLE JAW WRENCH Filed March 24, 1947 2 Sheets-Sheer, 2

Inventor Arthur A. Koskinen Patented Dec. 12, 1950 UNITED STATES.4 PATENT OFFICE TOGGLE ACTUATED SLIDABLE JAW WRENCH 2 Claims. 1

This invention relates to new and useful improvements in wrenches and more particularly to clamp wrenches.

The primary feature of the present invention is to provide a sliding-jaw wrench so constructed that the jaw may be quickly thrown into and out of working position to be used for tightening or loosening various size nuts or the like.

Another important feature of the present invention is to provide a wrench of the character referred to including a movable handle which is pivoted at one end to a sliding jaw whereby, as the movable handle is gripped and moved toward a fixed handle, the movable jaw extends toward a xed jaw at one end of the xed handle.

A further feature of the present invention is to provide a clamp wrench of the class described and including screw-threaded adjusting means for an approximate adjustment between the fixed jaw and the sliding jaw.

`A still further feature oi the present invention is to provide a clamp wrench that is simple and practical in construction, eiiicient and reliable in use, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a side elevational view of the clamp wrench constructed in accordance with the present invention.

Figure 2 is a top plan View thereof.

Figure 3 is an enlarged sectional view taken on line 3-3 of Figure l.

Figure 4 is an enlarged sectional view taken on line dof Figure 1.

Figure 5 is an enlarged sectional View taken on line 5-5 of Figure l.

Figure vfi is a side elevational view of the traveling block removed from the fixed handle.

Figure 7 is a longitudinal sectional View taken on line l'-`I of Figure 2.

Figure 8 is an enlarged sectional View taken on line 8--8 of Figure l.

Figure 9 is a perspective view of the fixed jaw.

Figure 10 is a perspective view of the sliding Jaw.

Figure 11 is a perspective view of the fixed handle.

Figure 12 is a perspective view of the screw thread rod holding block.

Figure 13 is a perspective view of the connecting link between the movable handle and the traveling block` Referring now to the drawings in detail, wherein for the purpose of illustration, I have disclosed a preferred embodiment of the present invention, the numeral 5 represents an elongated channel-shaped, fixed handle having a forwardly disposed hollow arm 6.

Extending between the sides 0f the forwardly disposed arrn d is the substantially flat triangular Vinner portion l of a fixed jaw designated generally by the numeral 8, and said inner portion is detachably secured to arm 6 by rivets or the like 9.

An arcuate trailing arm 8 forming an integral part of portion 'I is adapted to conform to the curvature of the forward end of the handle and said arm Si is secured as at 9 to the handle to further iix and strengthen the jaw 8.

Held iixed in the opposite end of handle 5 from arm by fastening means IU is a fixed block II having an internally threaded bore I2 at one end and an enlarged smooth bore I3 comm-unicating with bore I2 at the other end.

A screw-threaded rod I4 adjustable in block II has a finger-gripping knob I5 at its outer end, and the inner decreased threaded end I6 of said "screw is extended loosely through an annular bracket Il at the rear end of a traveling block I8 and held thereto by a flange or bead I9 tted on end I6 so as to make a swivel connection between the rod Il! and the traveling block I8.

The forward end oi traveling block I8 is provided with a vertical recess 2l] adapted to receive the flattened inner end 2| of the sliding jaw 22 which is pivoted to block I3 and in recess 28 by rivet or the like 23.

The confronting faces oi jaws 8 and 22 are serrated, toothed, or otherwise formed as at 24 to grip a nut or the like (not shown) or whereby the device may be used as a vise.

One end 25 of a substantially channel shaped hand-gripping lever 26 is pivotally connected by a rivet or the like 21 to the reduced rear portion 22a of jaw 22, and hand lever 26 is pivotally connected to traveling block I8 by a connecting link 28 whose upper end extends into a recess 29 in the lower rear portion of block I8 and is pivoted to the block by a rivet or the like 30. The lower end of link 28 extends between the sides: 25 of hand lever 2B and is pivoted thereto by a rivet or the like 3 I A stop 32 projecting rearwardly from link 28 is adapted to bear against hand lever 26 whereby the movement of said lever is limited so as not to contact handle 5.

The recess 28 in block I8 allows a slight movement of the sliding jaw but the serrated faces of jaws 8 and 22 will be parallel while in operation due to pivots 23 and 21.

In the use of the device, jaw 22 is adjustable toward and away from fixed j-aw 8 by turning screw P4 JAwhich moves traveling black il 8 fand also the sliding 'jaw The pivoted lever 26 is then gripped to close the same toward nxed handle 5 and the link `:28 functions in a toggle action to .force .the .movable jaw 22 forwardly in tight clamping engagement with the work.

In view'of the foregoing description Iita-Ken 1in conjunction with the accompanying drawings, it is believed that a clear understanding df`the device will be quite apparent to those skilled .in this art. A more detailed description is accordingly .deemed unnecessary.

.'It .is to be understood, however, ithat even though there is herein shown and described -a preferred embodimentfcf-the invention, lthe same Lis1susceptible vto -certain .changes fully compre lhended `by Ythe spirit .of `the .invention as `herein described .and within ,the-scope of -the .appended iclaims.

What I claim as new is: A ..1. .Afppe wrench=comprising |`anlelongatecl .sub-

stantially .rectangular housing having .inner yand outerend portions, `a;.laterally :projecting `arm fintegrally .fformed :with lthe louter .end `portion tof gsaidhous'in'gand'having.a.centralslonaxedfliaw having a shankV portion secured in the slot in .said .a traveling .block `slidaloly mounted .in `said housing .and lincluding a 'longitudinal rib, ysaid housing having -a longitudinal :slot receiving ysaid -nih, said .traveling 4block having a recess in registry with -said slot, a .slidable jaw .having 5a .shank pivotally .mounted :in ,said .recess vand 4 slidably received in the slot in said housing, a fixed block mounted in said housing at the inner end portion thereof and including an internally threaded, longitudinal bore, a feed screw receivably engaging said bore, means swiveling said feed Screw to said block, a channel shaped lever having a bifurcated terminal pivoted to the shank of said slidable jaw, a pitman connecting said y.lever to said Atraveling ibl'ock, said traveling block having a recess vwintermediate Aits l'ends 'in which one end of said pitman is pivoted, and a stop .integrally formed withY said pitman engaging the .web .portion ofsaid handle for limiting movement fof said lever 'toward said housing.

2. A wrench comprising an elongated housing :having inner fand outer ends, a block xed within ^the inner end .of said housing and having an internallythreaded 'axial bore, a rst jaw secured :to the o'uter end of said housing, a slide received in said housing, a screwftlireaded rod swiveled to said slide and threaded in rsaid lbore, .a .second jaw .pivoted .to said fslide and .movable .withsaid slide, said housing having a slot slidablyreceiving .said .second jaw, `a Alever vpivoted to said second jaw, vand a .pitman connecting the Alever to the :second jaw and extending .through said islet.

ARTHUR "A, KO'SKINEN.

REFERENCES CITED The following :references are `ci `record in the `ile ci this :patent:

UNITED f STATES 'PATENTS Number Name QDate 39.555431 Franklin Jan. l1, 1889 11,586,513 Andersen June L1, 1926 4129S/54E .Borchers 0st. '20,194.2 '2,312,947 Westman .Mar- 12, .1943 2,379,107 rScl'ck June326,-1945 2,452,625 Alpels NOV. l2, 1948 

